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[165.204.84.11]) by smtp.gmail.com with ESMTPSA id c26sm9148691qkm.98.2020.05.11.14.20.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 May 2020 14:20:29 -0700 (PDT) From: Alex Deucher X-Google-Original-From: Alex Deucher To: alsa-devel@alsa-project.org, broonie@kernel.org, vijendar.mukunda@amd.com, tiwai@suse.de Subject: [PATCH v2 05/14] ASoC: amd: add ACP3x PDM platform driver Date: Mon, 11 May 2020 17:20:05 -0400 Message-Id: <20200511212014.2359225-6-alexander.deucher@amd.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200511212014.2359225-1-alexander.deucher@amd.com> References: <20200511212014.2359225-1-alexander.deucher@amd.com> MIME-Version: 1.0 Cc: Alex Deucher , Vijendar Mukunda X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" From: Vijendar Mukunda PDM platform driver binds to the platform device created by ACP3x PCI device. PDM driver registers ALSA DMA and CPU DAI components with ASoC framework. Signed-off-by: Vijendar Mukunda Signed-off-by: Alex Deucher --- V2: - Removed empty declaration of dai_ops sound/soc/amd/renoir/acp3x-pdm-dma.c | 95 ++++++++++++++++++++++++++++ sound/soc/amd/renoir/rn_acp3x.h | 5 ++ 2 files changed, 100 insertions(+) create mode 100644 sound/soc/amd/renoir/acp3x-pdm-dma.c diff --git a/sound/soc/amd/renoir/acp3x-pdm-dma.c b/sound/soc/amd/renoir/acp3x-pdm-dma.c new file mode 100644 index 000000000000..1dda8cf2edd2 --- /dev/null +++ b/sound/soc/amd/renoir/acp3x-pdm-dma.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// AMD ALSA SoC PDM Driver +// +//Copyright 2020 Advanced Micro Devices, Inc. + +#include +#include +#include +#include +#include +#include +#include + +#include "rn_acp3x.h" + +#define DRV_NAME "acp_rn_pdm_dma" + +static struct snd_soc_dai_driver acp_pdm_dai_driver = { + .capture = { + .rates = SNDRV_PCM_RATE_48000, + .formats = SNDRV_PCM_FMTBIT_S24_LE | + SNDRV_PCM_FMTBIT_S32_LE, + .channels_min = 2, + .channels_max = 2, + .rate_min = 48000, + .rate_max = 48000, + }, +}; + +static const struct snd_soc_component_driver acp_pdm_component = { + .name = DRV_NAME, +}; + +static int acp_pdm_audio_probe(struct platform_device *pdev) +{ + struct resource *res; + struct pdm_dev_data *adata; + unsigned int irqflags; + int status; + + if (!pdev->dev.platform_data) { + dev_err(&pdev->dev, "platform_data not retrieved\n"); + return -ENODEV; + } + irqflags = *((unsigned int *)(pdev->dev.platform_data)); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n"); + return -ENODEV; + } + + adata = devm_kzalloc(&pdev->dev, sizeof(*adata), GFP_KERNEL); + if (!adata) + return -ENOMEM; + + adata->acp_base = devm_ioremap(&pdev->dev, res->start, + resource_size(res)); + if (!adata->acp_base) + return -ENOMEM; + + adata->capture_stream = NULL; + + dev_set_drvdata(&pdev->dev, adata); + status = devm_snd_soc_register_component(&pdev->dev, + &acp_pdm_component, + &acp_pdm_dai_driver, 1); + if (status) { + dev_err(&pdev->dev, "Fail to register acp pdm dai\n"); + + return -ENODEV; + } + return 0; +} + +static int acp_pdm_audio_remove(struct platform_device *pdev) +{ + return 0; +} + +static struct platform_driver acp_pdm_dma_driver = { + .probe = acp_pdm_audio_probe, + .remove = acp_pdm_audio_remove, + .driver = { + .name = "acp_rn_pdm_dma", + }, +}; + +module_platform_driver(acp_pdm_dma_driver); + +MODULE_AUTHOR("Vijendar.Mukunda@amd.com"); +MODULE_DESCRIPTION("AMD ACP3x Renior PDM Driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRV_NAME); diff --git a/sound/soc/amd/renoir/rn_acp3x.h b/sound/soc/amd/renoir/rn_acp3x.h index 5e4fd99397d5..0b450882c6c4 100644 --- a/sound/soc/amd/renoir/rn_acp3x.h +++ b/sound/soc/amd/renoir/rn_acp3x.h @@ -29,6 +29,11 @@ #define ACP_ERROR_MASK 0x20000000 #define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF +struct pdm_dev_data { + void __iomem *acp_base; + struct snd_pcm_substream *capture_stream; +}; + static inline u32 rn_readl(void __iomem *base_addr) { return readl(base_addr - ACP_PHY_BASE_ADDRESS);